ABAP Select data from SAP table WFMCAS_SCHDL_EVT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WFMCAS_SCHDL_EVT table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to WFMCAS_SCHDL_EVT. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the WFMCAS_SCHDL_EVT table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_WFMCAS_SCHDL_EVT TYPE STANDARD TABLE OF WFMCAS_SCHDL_EVT,
      WA_WFMCAS_SCHDL_EVT TYPE WFMCAS_SCHDL_EVT,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <WFMCAS_SCHDL_EVT> TYPE WFMCAS_SCHDL_EVT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WFMCAS_SCHDL_EVT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WFMCAS_SCHDL_EVT
  INTO TABLE IT_WFMCAS_SCHDL_EVT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WFMCAS_SCHDL_EVT
*  INTO TABLE @DATA(IT_WFMCAS_SCHDL_EVT2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_WFMCAS_SCHDL_EVT INDEX 1 INTO DATA(WA_WFMCAS_SCHDL_EVT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WFMCAS_SCHDL_EVT ASSIGNING <WFMCAS_SCHDL_EVT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WFMCAS_SCHDL_EVT>-MANDT = 1.
<WFMCAS_SCHDL_EVT>-SCHDL_EVT_ID = 1.
<WFMCAS_SCHDL_EVT>-START_DATE = 1.
<WFMCAS_SCHDL_EVT>-END_DATE = 1.
<WFMCAS_SCHDL_EVT>-TEMP_FLAG = 1.

ENDLOOP.

LOOP AT IT_WFMCAS_SCHDL_EVT INTO WA_WFMCAS_SCHDL_EVT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WFMCAS_SCHDL_EVT-ORG_PLVAR, sy-vline,
  WA_WFMCAS_SCHDL_EVT-ORG_OTYPE, sy-vline,
  WA_WFMCAS_SCHDL_EVT-ORG_OBJID, sy-vline,
  WA_WFMCAS_SCHDL_EVT-EVT_GUID, sy-vline,
  WA_WFMCAS_SCHDL_EVT-SCHDL_EVT_GUID, sy-vline,
  WA_WFMCAS_SCHDL_EVT-IS_ACTIVE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WFMCAS_SCHDL_EVT you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_WFMCAS_SCHDL_EVT TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_WFMCAS_SCHDL_EVT INTO WA_WFMCAS_SCHDL_EVT.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit CUNIT, internal->external for field DURATION_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WFMCAS_SCHDL_EVT-DURATION_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WFMCAS_SCHDL_EVT-DURATION_UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TZTMP, internal->external for field CREATED_AT
CALL FUNCTION 'CONVERSION_EXIT_TZTMP_OUTPUT'
  EXPORTING
    input =                      WA_WFMCAS_SCHDL_EVT-CREATED_AT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WFMCAS_SCHDL_EVT-CREATED_AT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TZTMP, internal->external for field CHANGED_AT
CALL FUNCTION 'CONVERSION_EXIT_TZTMP_OUTPUT'
  EXPORTING
    input =                      WA_WFMCAS_SCHDL_EVT-CHANGED_AT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WFMCAS_SCHDL_EVT-CHANGED_AT.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_WFMCAS_SCHDL_EVT_STR, 
MANDT TYPE STRING,
SCHDL_EVT_ID TYPE STRING,
START_DATE TYPE STRING,
END_DATE TYPE STRING,
TEMP_FLAG TYPE STRING,
ORG_PLVAR TYPE STRING,
ORG_OTYPE TYPE STRING,
ORG_OBJID TYPE STRING,
EVT_GUID TYPE STRING,
SCHDL_EVT_GUID TYPE STRING,
IS_ACTIVE TYPE STRING,
EVENT_START_DATE TYPE STRING,
WHEN_STOP_SCHED TYPE STRING,
EVENT_END_DATE TYPE STRING,
NUM_WEEKS TYPE STRING,
NO_REPEAT_FLAG TYPE STRING,
ON_SUN TYPE STRING,
ON_MON TYPE STRING,
ON_TUE TYPE STRING,
ON_WED TYPE STRING,
ON_THU TYPE STRING,
ON_FRI TYPE STRING,
ON_SAT TYPE STRING,
FIXED_START_TIME TYPE STRING,
FIXED_END_TIME TYPE STRING,
SELECT_AGTS_BY TYPE STRING,
SELECT_BY_PROF TYPE STRING,
SKILL_MIN_MAX TYPE STRING,
SKILL_LEVEL TYPE STRING,
SELECT_BY_QUAL TYPE STRING,
SCHEDALLDAYFLAG TYPE STRING,
FIRSTDAYINDEX TYPE STRING,
LASTDAYINDEX TYPE STRING,
MAX_OCCUR TYPE STRING,
VAR_START_TIME TYPE STRING,
VAR_END_TIME TYPE STRING,
DURATION TYPE STRING,
DURATION_UNIT TYPE STRING,
PRIMJOBSKILL_FLG TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_AT TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_AT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WFMCAS_SCHDL_EVT_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_WFMCAS_SCHDL_EVT_STR-MANDT sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-SCHDL_EVT_ID sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-START_DATE sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-END_DATE sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-TEMP_FLAG sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-ORG_PLVAR sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-ORG_OTYPE sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-ORG_OBJID sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-EVT_GUID sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-SCHDL_EVT_GUID sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-IS_ACTIVE sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-EVENT_START_DATE sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-WHEN_STOP_SCHED sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-EVENT_END_DATE sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-NUM_WEEKS sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-NO_REPEAT_FLAG sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-ON_SUN sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-ON_MON sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-ON_TUE sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-ON_WED sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-ON_THU sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-ON_FRI sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-ON_SAT sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-FIXED_START_TIME sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-FIXED_END_TIME sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-SELECT_AGTS_BY sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-SELECT_BY_PROF sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-SKILL_MIN_MAX sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-SKILL_LEVEL sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-SELECT_BY_QUAL sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-SCHEDALLDAYFLAG sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-FIRSTDAYINDEX sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-LASTDAYINDEX sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-MAX_OCCUR sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-VAR_START_TIME sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-VAR_END_TIME sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-DURATION sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-DURATION_UNIT sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-PRIMJOBSKILL_FLG sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-CREATED_BY sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-CREATED_AT sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-CHANGED_BY sy-vline 
WA_WFMCAS_SCHDL_EVT_STR-CHANGED_AT sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.